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APPLICATION FILED FEB. 18. I915- m: mmms PETERS ca.. vnuwun UNTTED STATtE PATEIQ T QFFTQE;

PAOLO MEJ'ANI, OF SPEZIA, ITALY.

APPARATUS FOR BURNING COMBUSTIBLE LIQUIDS IN STEAM-BOILER FURNACES.

Original application filed June 5, 1913, Serial No. 771,963.

To all whom it may concern Be it known that I, PAOLO MnJANI, a subject of the King of Italy, and residing at 2 Piazza St. Bon, Spezia, Italy, have invented certain new and useful Improvements in Apparatus for Burning Combustible Liquids in Steam- Boiler Furnaces as originally set forth in my United States application, Serial Jo. 771,963, filed June 5, 1913, of which the present application is a division; and I do hereby declare the-following to be a full, clear, and exact description of the same.

The invention refers to improvements in apparatus for burning combustible liquids and more particularly to apparatus of that type wherein one or more atomizers inject into the furnace an atomized liquid, and it has for its objectto provide for a perfect mixture of the liquid with the air required for the combustion and also for a preliminary heating of the liquid to be atomized.

The first result is obtained by a special arrangement of the atomizers which must be such as to permit of their being worked independently of each other and separately controlled respecting their atomizing action, and by providing means for regulating the flow of air required for the combustion. According to the invention, the several atomizers are arranged around a conduit or channel adapted to guide the air required for the combustion, into the furnace, this conduit being provided with an inwardly opening flap valve arranged to open automatically for admitting a largeramount of air into the furnace when the outside air pressure is higher than the inside air pressure or the air pressure within the furnace, and to close automatically so as to throttle or cut off the passage of air when the air pressure within the furnace is higher than the outside pressure.

The second result is obtained by causing the liquid to be atomized to pass through conduits intermediate of conduits wherein steam or other heating fluid is circulating. All these conduits are preferably arranged in a circle around the air conduit and they communicate respectively with the inlet openings for the liquid'to be atomized and for the heating steam and with the atomizers and with an opening for discharging the heating steam. This arrangement is very useful, especially when the fuel isa heavy Specification of Letters Patent.

Patented Aug. 8, 1916.

Divided and this application filed February 18,

Serial No. 9,063.

oil requiring a very efficient heating, which is thus secured without special heaters.

The improvements according to the invention are more especially intended to be used with the atomizers described in the specification accompanying the application for patent Serial Number 771963, and in order that the invention be readily understood, there will here be described, by way of example, an apparatus for burning combustible liquids in steam boiler furnaces, which is constructed in accordance with the invention and provided with three atomizers such as described in the said specification.

The number of the atomizers may of course be varied and atomizers of varying type may be used without altering the invention.

The invention is described with reference to the annexed drawing in which Figure 1 is a side elevation of the apparatus, Fig. 2 a front elevation or plan view thereof, Fig. 3 a longitudinal section on line (t b of Figs. 1 and 2, Fig. at a partial section on line 0-al of Figs. 1 and 2 and Fig. 5 a partial section on line fg of Fig. 2.

The apparatus comprises a conduit or pipe 2, around which are arranged the atomizers 1 adapted to be separately controlled through the respective hand-wheels, circular conduits 3 for introducing the liquid to the various atomizers by way of the holes l, and a circular conduit 5 in which the heating steam circulates.

The liquid .to be atomized enters through the inlet 6 connected with the liquid pipe, and'flows through .the valve 7 adapted to be controlled by means of a hand-wheel 8 or the like, into a filter 9 provided with a filteringdevice 10, from. where the filtered liquid is admitted through the holes 11 into the circular conduits 3 and distributed therefrom to the various atomizers by way of the holes 4.

The conduit 5 is interposed between the conduits 3 so that the heat of the steam circulating therein may be transmitted to the liquid flowing through the conduits 3. The steam or other heating fluid enters through the inlet 12 connected to a steam pipe, passes through the conduit 5 and leaves through the outlet 13 connected to a discharge pipe. .A diaphragm or partition 14L interrupts the continuity of the conduit 5 between the inlet and the outlet and thus causes the heating fluid to pass through the whole conduit, the liquid to be atomized beingthus very efliciently heated.

The conduit 2 is intended for the passage of the air required for the combustion of the liquid atomized by the atomizers 1. The air enters the conduit 2 at the forward end and the boiler furnaces at the rear end 16 of the conduit near the holes 17 for the discharge of the atomized liquid from the atomizers 1. As the atomizers are arranged around the conduit 2, all the particles of the atomized liquid will be met by the air current coming from the conduit and a perfect-mixture of the air with the atomized liquid and therefore a very good combustion will be'secured.

In order to regulate the quantity of air passing through the conduit 2, the latter is provided at its forward end 15 with a valve 18 opening on hinges from the outside toward the inside of the conduit. When the air pressure outside is higher than the inside air pressure or than the air pressure within the furnace, the flap opens automatically, while it closes automatically when the pressure in the furnace is higher than the outside pressure. A screw 19 is used for keeping the flap in its open position, and a chain 20 serves to open or close it or regulate its position, when this is requisite.

In the drawing, 21 is the sole or base of the apparatus to secure it in place, and 22 indicates the wall of the furnace to which the apparatus is applied.

pass; a plurality of atomizers arranged around said conduit for atomizing the liquid to be burnt; means for working and controlling the atomizers each independently from the others; and means for regulating the amount of air entering the air conduit, said means comprising an inwardly opening valve arranged at the inlet end of the air conduit and adapted to open automatically by air pressure from the outside and to close automatically when the outside pressure is less than the pressure within the furnace.

2. A liquid fuel burner for steam boiler furnaces provided with a conduit through which the air for the combustion is made to pass; a plurality of atomizer-s arranged around said conduit for atomizing the liquid to be burnt; means for working and controlling the atomizers each independently from the others; passages through which the fuel to be atomized is made to pass; and additional conduits through which heating fluid is made to pass for heating the fuel in said passages.

3. A liquid fuel burner for steam boiler furnaces provided with a conduit through which the air for the combustion is made to pass; a plurality of atomizers arranged around said conduit for atomizing the liquid to be burnt; means for working and controlling the atomizers each independently from the others; passages through which the fuel to be atomized is made to pass; and additional conduits through which heating fiuid is made to pass for heating the fuel in said passages, said passages and said additional conduits being arranged in a circle around the conduit for the passage of the air required for the combustion.

In testimony whereof I have signed my name in the presence of two subscribing witnesses the first day of February, 1915.

PAOLO MEJANI. lVitnesses GUSTAS THADEN. ConnLLo FONTIAN.

Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents, Washington, D. C. 

